Neem has claims to be effective against  a variety of human health issues from cancer to tooth decay. The active compound is innocuous to mammals, as well as humans and can be safely administered, it has been a traditional "cure all" in the Indian sub-continent for millennia. Neem isolates have shown anti-fungal, anti-bacterial (dental caries) and anti-mitotic (cancer) properties all of which may be exploited to improve human health.